docs: def fix_return_value(v, method_name, method=None, checker=None):
      """
      Transforms scalar return values into Result.
      """
      # remove common check prefix
      method_name = (method_name or method.__func__.__name__).replace("check_","")
      if v is None or not isinstance(v, Result):
          v = Result(value=v, name=method_name)
  
      v.name         = v.name or method_name
  
      v.checker      = checker
      v.check_method = method
  
      return v